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depmod: simple memory optimization

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function                                             old     new   delta
filename2modname                                      67      86     +19
parse_module                                         374     351     -23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2015-01-24 22:30:30 +01:00
parent 86031a5ffd
commit cc70b6f8b6
2 changed files with 14 additions and 11 deletions
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6
modutils/modutils.c
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@ -47,13 +47,14 @@ int FAST_FUNC string_to_llist(char *string, llist_t **llist, const char *delim)
char* FAST_FUNC filename2modname(const char *filename, char *modname)
{
char local_modname[MODULE_NAME_LEN];
int i;
const char *from;
if (filename == NULL)
return NULL;
if (modname == NULL)
modname = xmalloc(MODULE_NAME_LEN);
modname = local_modname;
// Disabled since otherwise "modprobe dir/name" would work
// as if it is "modprobe name". It is unclear why
// 'basenamization' was here in the first place.
@ -63,6 +64,9 @@ char* FAST_FUNC filename2modname(const char *filename, char *modname)
modname[i] = (from[i] == '-') ? '_' : from[i];
modname[i] = '\0';
if (modname == local_modname)
return xstrdup(modname);
return modname;
}